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Weird stalling [Archive] - StangBangerz Forums
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quik lx
05-30-2008, 04:48 PM
So I got 2 different cars, both with new 5.0 engine's (less than 1000 miles each) both with all new sensors (ACT, coolant temps, AIC's ect..) both are stalling out coming off exit ramps and up to stoplights. A slight touch of the gas stabilizes the idle. Both cars start up and go into idle just fine cold or hot. Timing is set...I'm outta ideas...anyone?
fst 5pto
05-30-2008, 05:01 PM
Are the cars speed density or maf? There are a number of things it could be. Checked the voltage on the AIC?
Paul408Notch
05-30-2008, 05:21 PM
Maybe a dumb question, but have you set the idle properly?

Unplug the IAC, and set the throttle screw so the motor will just barely run. Then re-connect the IAC and reset the TPS.
Gearhead
05-30-2008, 05:52 PM
Vehicle Speed Sensors (VSS) check out ok ??
quik lx
05-30-2008, 09:41 PM
Are the cars speed density or maf? There are a number of things it could be. Checked the voltage on the AIC?

Both cars are mass air cars
quik lx
05-30-2008, 09:43 PM
Maybe a dumb question, but have you set the idle properly?

Unplug the IAC, and set the throttle screw so the motor will just barely run. Then re-connect the IAC and reset the TPS.


Every car I have ever unplugged the IAC on (about 12 of these) dies instantly.
quik lx
05-30-2008, 09:44 PM
Vehicle Speed Sensors (VSS) check out ok ??

One of the cars has a TKO 500 so no speed sensor hooked up. The other has a Painless 5.0 EFI wiring harness.
fst 5pto
05-30-2008, 10:06 PM
The MAF sensor good?
Paul408Notch
05-30-2008, 11:14 PM
Every car I have ever unplugged the IAC on (about 12 of these) dies instantly.

I set the Idle that way on every car I mess with and they always idle on the money afterwards. :dunno:
mach_u
05-30-2008, 11:51 PM
Not sure if the Cobra is one of those but it's doing the exact same thing. Really weird!
Stangman
05-31-2008, 12:53 AM
pulling too much or not enough vacuum??
Timido
06-01-2008, 10:04 PM
Clean the Throttle blade and body with a plastic brush and cleaner if you have not yet. We used to set the idle like Paul does. Try adjusting the throttle body some to get it to run with the Idle air control unplugged and set the base idle with the throttle screw and the IAC unpluged.
quik lx
06-02-2008, 10:24 PM
More fuel seemed to fix the turbo car(uped it to 42 PSI)..it's pullin 15 vac and not stalling out now.....

Havent got to work on the othe rone yet.